Yes your mouth will stop getting all cut up and your gums will basically become stronger if you do it on a daily basis
Well you build up a tolerance to the nicotine in the tobacco. So yes.
Yes.
Somewhat, but they can't build up a tolerance that protects them from the damage of intense noise.
This question isn't quite detailed enough for me to come up with a good answer, but if you're asking if people can build tolerance to adderall the answer is yes, very much so. Almost all prescribed people who take it regularly, AD/HD or not, build some tolerance to it. This isn't to say that everyone becomes addicted to it because addiction and tolerance are not the same thing. If you're careful in your tapering process and never use more than a doctor prescribed AND you're fully honest with your doctor, you'll probably build a slow tolerance but be able to avoid addiction.
Yes. Tolerance is built up rather quickly.
Not totally, but you can build up a tolerance to it.
It is possible, yes.
There is no known instance of people being immune to the effects of marijuana. However, people who have used a lot of it might build up a tolerance where it takes more to become intoxicated.
Yes, plenty of resistant
SMOKE as much as you can as long as you can for many days
1/64 inch
Yes, some people can become addicted after just one try.
no. not at all. a few people i know have been busted for morphine usage only one time.